package com.example.test2018131379;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String reqPath = request.getServletPath();
        //只有返回true才会继续向下执行，返回false取消当前请求
        HttpSession session = request.getSession();
        if (session == null||session.getAttribute("user") == null){
            //log.trace("access#{},not logged in,return",rePath);
            //request.setStatus(HttpStatus.UNAUTHORIZED.value());
            response.sendRedirect("/login");
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView)throws Exception{}

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest,HttpServletResponse httpServletResponse,Object o,Exception e)throws Exception{}
}
